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Helianthus decapetalus

Also called Ten-Petaled Sunflower


More About Helianthus decapetalus

  • Yellow petals surround a yellowish-brown central disk
  • Dark green leaves with serrated edges
  • Foliage hangs from hairy reddish-green stems
  • Good cut flower
  • Attracts birds
  • Bloom Time: Late summer to mid-fall
  • Flower Size: 7.5 cm

Interesting Notes:

Native to Ontario

Zone:

4

Height:

125-150 cm

Spread:

80-100 cm

Colour:

Yellow
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Thinleaf Sunflower Growing and Maintenance Tips

Grow in partial sun or dappled sunlight, moist to average conditions, and a rich loamy soil. Naturalizes aggressively by seed and rhizome. Flowering is more prolific in long, hot summers. 


Helianthus decapetalus Characteristics

Partial Sun/Shade
Partial Sun/Shade
Attracts Birds
Attracts Birds
Fast
Fast
Cut Flower/Foliage
Cut Flower/Foliage
Native to Ontario
Native to Ontario

Soil Moisture

Moist to Average

Flowering Time

Lt. Sum-Fall
Fall

Habit

Clumping
Upright

Foliage Color

Green (dark)

Landscape uses

Woodland/woods edge
Naturalizing